“…Environmental and genetic causes have been discussed as potential aetiologies. 1 , 2 Limitations of the movements in foetal‐life, neuromuscular‐diseases, spina‐bifida, muscular‐dystrophy, and sometimes a maternal history of multiple‐sclerosis are also considered as the causes. 3 As the joints in the chest wall also can be affected, new‐borns can go into respiratory failure.…”